This paper constitutes a practical hand-book prepared for the international stage of fishing technology (Nantes, 1978, May 31 to June 30). The authors give many data on the fishing technology, on the fishing gear classification, the behaviour of fish in relation with the fishing gear, the environomental effects on fishing gear and methods and on fish behaviour effects on the fishing methods. They explain the conception and the construction of the principal models of fishing gear, the conception and the equipment of fishing boats. They also give explications on the detection and the attraction of fish. They expound the organisation and the planification of a fishing technology service.